Current-interrupting device for electrically-heated water-distributing apparatus



Fb.z4.19z5. 1 527483 E FOR ELEGTRICALLY HEATED WATER J. ISTAS UaR'ENT INTERRUPTING DEvIc DISTRIBUTING APPARATUS Filed Dec. 27, 1923 Patented Feb. 24, 1925.

YUNITED STATES PATENT OFFICE.

JULES ISTAS, 0F BRUSSELS,y BELGIUM.

Application led December 27, 1923.

To all whom it may concern:

Be it known that I, JULES IsTAs, a citizen of the Kingdom of Belgium, and resident of Brussels, Belgium, have invented certain new and useful Improvements in or Relating to aA Current-Interrupting Device for Electrically-Heated later-Distributing Apparatus; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked therein, which form a part of this specifica tion.

The present invention has for its object a current interrupting device for electrically heated water distributing apparatus, characterized by the fact that it is constituted by a piston integral with the movable part of a current interrupter and adapted to be displaced in a. cylinder provided with a water inlet pipe and wit-h a water outlet pipe, the former being situated below the piston in its position of rest, and the other above, the said piston being moved in one direction by the pressure of water and in the other direction by a return arrangement, and being provided with a small conduit establishing connection between its two faces.

The annexed drawing represents by way of example two embodiments of an interrupter device according to this invention.

Figure l represents the application to a distributing arrangement for hot water under pressure,

Figure 2 the application to a. distributing device for hot water with free outflow.

In the interior of a cylinder a, provided at its lower port-ion with a water inlet pipe al and near its upper portion with a water outlet pipe a2, is adapted to move a piston b integral with a rod b1, traversing the cylinder a through a stutling box c. A passage b2 of small cross section is arranged in the piston Z) to establish communication between the two faces of the piston and a spring b3 arranged around the rod b1 and supported on the one hand on the cylinder a and on the other hand on the piston Z) tends con- Serial No. 683,064-

stantly to return the piston l) to the position represented in t-he igures of the drawings.

Secured to the rod b1' of the piston is the movable part l of an interrupter, the fixed part of which is represented at (Z1.

In series with the conduit e for the incoming water, which is connected to the pipe L1 of the cylinder fr, is arranged a heating coil f, the heating of which is obtained by resistances g located between its turns; the water, after having circulated in the coil f, the conduit e and the cylinder a, flows out by way of a conduit 7L connected to the pipe a2 of the cylinder a and provided with a stopeock z'. The resistances f/ are connected to the source of current through the interrupting' device CZ, (Z1.

In the example illustrated in Figure 2 the cock c', instead of being arranged in the water outlet conduit fr, is provided on the water inlet conduit e and in front of the heating' coil.

The opera-tion of this arrangement is as follows:

The cock c' being closed, the parts occupy the position represented in the drawing. IVhen the cock z' is opened, the equilibrium between the two faces of the piston being disturbed, the pressure of the water moves the piston Z) until it uncovers the orifice a2; the stroke 01' the piston 7) is so chosen that the interrupter (l, Z1 is closed at this moment, whereby the resistances g are placed in circuit, and the water traversing the coil is heated. When the cock z' is closed, the piston b descends under the action of the spring 3, at the same time opening the iuterrupter d, (Z1, and this descending movement is rendered possible due the presence of the passage 252 which allows the flow ot water from one face of the piston to the other.

Itis evident that the invention is not limited to the details of the construction hereinbefore described, and that it may be carried out according toother modilications based on the same principle. Thus, for instance, the construction could be arranged for the interruption of direct current, or

single phase or polyphase alternating current.

That .I claim is: A current interrupting device for electrically heating water in a water distributing y apparatus, comprising a piston integral with 5 the movable member of the current interrupter, said piston being adapted to be displaced in a. cylinder, an inlet pipe on said cylinder below the piston in its position of rest and a water outlet pipe above, the said 10 piston being moved in one direction by the pressure of the water and in the other direction by a return arrangement, and being provided with a narrow conduit establishing communication between its two faces.

In testimony whereof I aiix my signature 15 in presence of two witnesses.

JULES ISTAS. lVitnesses LEONARD LEVA, VMARIE DEFRELLEY. 

